/*
* Copyright (c) 1998, 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package build.tools.jdwpgen;
import java.util.*;
import java.io.*;
class Parse {
final StreamTokenizer izer;
final Map<String, Node> kindMap = new HashMap<String, Node>();
Parse(Reader reader) {
izer = new StreamTokenizer(new BufferedReader(reader));
izer.resetSyntax();
izer.slashStarComments(true);
izer.slashSlashComments(true);
izer.wordChars((int)'a', (int)'z');
izer.wordChars((int)'A', (int)'Z');
izer.wordChars((int)'0', (int)'9');
izer.wordChars((int)'_', (int)'_');
izer.wordChars((int)'-', (int)'-');
izer.wordChars((int)'.', (int)'.');
izer.whitespaceChars(0, 32);
izer.quoteChar('"');
izer.quoteChar('\'');
kindMap.put("CommandSet", new CommandSetNode());
kindMap.put("Command", new CommandNode());
kindMap.put("Out", new OutNode());
kindMap.put("Reply", new ReplyNode());
kindMap.put("ErrorSet", new ErrorSetNode());
kindMap.put("Error", new ErrorNode());
kindMap.put("Event", new EventNode());
kindMap.put("Repeat", new RepeatNode());
kindMap.put("Group", new GroupNode());
kindMap.put("Select", new SelectNode());
kindMap.put("Alt", new AltNode());
kindMap.put("ConstantSet", new ConstantSetNode());
kindMap.put("Constant", new ConstantNode());
kindMap.put("int", new IntTypeNode());
kindMap.put("long", new LongTypeNode());
kindMap.put("boolean", new BooleanTypeNode());
kindMap.put("object", new ObjectTypeNode());
kindMap.put("threadObject", new ThreadObjectTypeNode());
kindMap.put("threadGroupObject", new ThreadGroupObjectTypeNode());
kindMap.put("arrayObject", new ArrayObjectTypeNode());
kindMap.put("stringObject", new StringObjectTypeNode());
kindMap.put("classLoaderObject", new ClassLoaderObjectTypeNode());
kindMap.put("classObject", new ClassObjectTypeNode());
kindMap.put("referenceType", new ReferenceTypeNode());
kindMap.put("referenceTypeID", new ReferenceIDTypeNode());
kindMap.put("classType", new ClassTypeNode());
kindMap.put("interfaceType", new InterfaceTypeNode());
kindMap.put("arrayType", new ArrayTypeNode());
kindMap.put("method", new MethodTypeNode());
kindMap.put("field", new FieldTypeNode());
kindMap.put("frame", new FrameTypeNode());
kindMap.put("string", new StringTypeNode());
kindMap.put("moduleID", new ModuleTypeNode());
kindMap.put("value", new ValueTypeNode());
kindMap.put("byte", new ByteTypeNode());
kindMap.put("location", new LocationTypeNode());
kindMap.put("tagged-object", new TaggedObjectTypeNode());
kindMap.put("referenceTypeID", new ReferenceIDTypeNode());
kindMap.put("typed-sequence", new ArrayRegionTypeNode());
kindMap.put("untagged-value", new UntaggedValueTypeNode());
}
RootNode items() throws IOException {
List<Node> list = new ArrayList<Node>();
while (izer.nextToken() != StreamTokenizer.TT_EOF) {
izer.pushBack();
list.add(item());
}
RootNode node = new RootNode();
node.set("Root", list, 1);
return node;
}
Node item() throws IOException {
switch (izer.nextToken()) {
case StreamTokenizer.TT_EOF:
error("Unexpect end-of-file");
return null;
case StreamTokenizer.TT_WORD: {
String name = izer.sval;
if (izer.nextToken() == '=') {
int ntok = izer.nextToken();
if (ntok == StreamTokenizer.TT_WORD) {
return new NameValueNode(name, izer.sval);
} else if (ntok == '\'') {
return new NameValueNode(name, izer.sval.charAt(0));
} else {
error("Expected value after: " + name + " =");
return null;
}
} else {
izer.pushBack();
return new NameNode(name);
}
}
case '"':
return new CommentNode(izer.sval);
case '(': {
if (izer.nextToken() == StreamTokenizer.TT_WORD) {
String kind = izer.sval;
List<Node> list = new ArrayList<Node>();
while (izer.nextToken() != ')') {
izer.pushBack();
list.add(item());
}
Node proto = kindMap.get(kind);
if (proto == null) {
error("Invalid kind: " + kind);
return null;
} else {
try {
Node node = (Node)proto.getClass().newInstance();
node.set(kind, list, izer.lineno());
return node;
} catch (InstantiationException exc) {
error(exc.toString());
return null;
} catch (IllegalAccessException exc) {
error(exc.toString());
return null;
}
}
} else {
error("Expected kind identifier, got " + izer.ttype +
" : " + izer.sval);
return null;
}
}
default:
error("Unexpected character: '" + (char)izer.ttype + "'");
return null;
}
}
void error(String errmsg) {
System.err.println(Main.specSource + ":" + izer.lineno() +
": " + errmsg);
throw new RuntimeException("Error: " + errmsg);
}
}